Pseudocode is a **structured way** of writing an algorithm in **plain English** before converting it into actual code. It helps programmers **plan, organize, and visualize** the steps of a program before implementation.

## **1. Pseudocode for Finding the Sum of Two Numbers**

### **Problem Statement:**

Write a pseudocode to take two numbers as input and display their sum.

### **Pseudocode:**



```txt
BEGIN
   INPUT num1, num2
   SET sum = num1 + num2
   PRINT sum
END
```

**Explanation:**

* Take **two inputs** (num1 and num2).
* Perform **addition** and store the result in sum.
* **Display the sum** as output.

## **2. Pseudocode for Finding the Largest of Three Numbers**

### **Problem Statement:**

Write a pseudocode to find the largest among three numbers.

### **Pseudocode:**



```txt
BEGIN
   INPUT num1, num2, num3
   IF num1 > num2 AND num1 > num3 THEN
      PRINT "num1 is the largest"
   ELSE IF num2 > num1 AND num2 > num3 THEN
      PRINT "num2 is the largest"
   ELSE
      PRINT "num3 is the largest"
   ENDIF
END
```

**Explanation:**

* Compare num1, num2, and num3.
* Print the **largest** number based on conditions.

## **3. Pseudocode for Checking if a Number is Even or Odd**

### **Problem Statement:**

Write a pseudocode to determine whether a number is even or odd.

### **Pseudocode:**



```txt
BEGIN
   INPUT number
   IF number MOD 2 == 0 THEN
      PRINT "Even Number"
   ELSE
      PRINT "Odd Number"
   ENDIF
END
```

**Explanation:**

* Use the **modulus operator (MOD 2)** to check divisibility by 2.
* If remainder is 0, print "Even Number", otherwise print "Odd Number".

## **4. Pseudocode for Calculating Factorial of a Number**

### **Problem Statement:**

Write a pseudocode to calculate the **factorial** of a given number N.

### **Pseudocode:**



```txt
BEGIN
   INPUT N
   SET factorial = 1
   FOR i FROM 1 TO N DO
      factorial = factorial * i
   ENDFOR
   PRINT factorial
END
```

### **Explanation:**

* Multiply numbers from 1 to N to compute the factorial.
* Print the final value of factorial.

## **5. Pseudocode for Finding the Sum of First N Natural Numbers**

### **Problem Statement:**

Write a pseudocode to find the sum of the first N natural numbers.

### **Pseudocode:**



```txt
BEGIN
   INPUT N
   SET sum = 0
   FOR i FROM 1 TO N DO
      sum = sum + i
   ENDFOR
   PRINT sum
END
```

### **Explanation:**

* Initialize sum = 0.
* Use a loop to **add numbers** from 1 to N.
* Print the final sum.

## **6. Pseudocode for Checking if a Number is Prime**

### **Problem Statement:**

Write a pseudocode to check if a number N is **prime**.

### **Pseudocode:**



```txt
BEGIN
   INPUT N
   SET isPrime = True
   IF N <= 1 THEN
      PRINT "Not Prime"
   ELSE
      FOR i FROM 2 TO N/2 DO
         IF N MOD i == 0 THEN
            SET isPrime = False
            BREAK
         ENDIF
      ENDFOR
      IF isPrime THEN
         PRINT "Prime Number"
      ELSE
         PRINT "Not Prime"
      ENDIF
   ENDIF
END
```

### **Explanation:**

* Prime numbers are **greater than 1** and **divisible only by 1 and itself**.
* Check divisibility for numbers from 2 to N/2.
* If N is divisible by any number in this range, it’s **not prime**.

 before converting it into actual code. It helps programmers 

 the steps of a program before implementation.

1. Pseudocode for Finding the Sum of Two Numbers

Write a pseudocode to take two numbers as input and display their sum.

BEGIN
   INPUT num1, num2
   SET sum = num1 + num2
   PRINT sum
END

2. Pseudocode for Finding the Largest of Three Numbers

Write a pseudocode to find the largest among three numbers.

BEGIN
   INPUT num1, num2, num3
   IF num1 > num2 AND num1 > num3 THEN
      PRINT "num1 is the largest"
   ELSE IF num2 > num1 AND num2 > num3 THEN
      PRINT "num2 is the largest"
   ELSE
      PRINT "num3 is the largest"
   ENDIF
END

3. Pseudocode for Checking if a Number is Even or Odd

Write a pseudocode to determine whether a number is even or odd.

BEGIN
   INPUT number
   IF number MOD 2 == 0 THEN
      PRINT "Even Number"
   ELSE
      PRINT "Odd Number"
   ENDIF
END

4. Pseudocode for Calculating Factorial of a Number

BEGIN
   INPUT N
   SET factorial = 1
   FOR i FROM 1 TO N DO
      factorial = factorial * i
   ENDFOR
   PRINT factorial
END

5. Pseudocode for Finding the Sum of First N Natural Numbers

Write a pseudocode to find the sum of the first N natural numbers.

BEGIN
   INPUT N
   SET sum = 0
   FOR i FROM 1 TO N DO
      sum = sum + i
   ENDFOR
   PRINT sum
END

6. Pseudocode for Checking if a Number is Prime

Write a pseudocode to check if a number N is 

BEGIN
   INPUT N
   SET isPrime = True
   IF N <= 1 THEN
      PRINT "Not Prime"
   ELSE
      FOR i FROM 2 TO N/2 DO
         IF N MOD i == 0 THEN
            SET isPrime = False
            BREAK
         ENDIF
      ENDFOR
      IF isPrime THEN
         PRINT "Prime Number"
      ELSE
         PRINT "Not Prime"
      ENDIF
   ENDIF
END